System and method for performing in-band reflection analysis in a passive optical network
US9118412B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 27, 2011 |
| Grant date | Aug 25, 2015 |
| Priority date | — |
| Expiry date | Oct 10, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M11/3145
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for performing in-band reflection analysis in a passive optical network. The system comprises an optical line terminal (OLT) that includes a transceiver for transmitting continuous downstream data modulated on a first wavelength and receiving upstream burst data modulated on a second wavelength, the OLT further includes a receiver for receiving signals reflected from the PON that are modulated on the first wavelength, wherein the continuous downstream data comprises user data and a test data pattern; and a reflection analysis unit for cross-correlating between a time-shifted version of the transmitted test data pattern and the reflected signals, wherein the test data pattern is time-shifted relatively for an optical location to be tested.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.